Files
mattermost-mobile/app/context/theme/index.tsx
2021-09-23 14:44:50 -03:00

96 lines
3.1 KiB
TypeScript

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import {Q} from '@nozbe/watermelondb';
import withObservables from '@nozbe/with-observables';
import React, {ComponentType, createContext, useEffect} from 'react';
import {Appearance, EventSubscription} from 'react-native';
import {Preferences} from '@constants';
import {MM_TABLES, SYSTEM_IDENTIFIERS} from '@constants/database';
import EphemeralStore from '@store/ephemeral_store';
import {setNavigationStackStyles} from '@utils/theme';
import type {PreferenceModel, SystemModel} from '@database/models/server';
import type Database from '@nozbe/watermelondb/Database';
type Props = {
currentTeamId: SystemModel[];
children: React.ReactNode;
themes: PreferenceModel[];
}
type WithThemeProps = {
theme: Theme;
}
const {SERVER: {PREFERENCE, SYSTEM}} = MM_TABLES;
export function getDefaultThemeByAppearance(): Theme {
if (Appearance.getColorScheme() === 'dark') {
return Preferences.THEMES.onyx;
}
return Preferences.THEMES.denim;
}
export const ThemeContext = createContext(getDefaultThemeByAppearance());
const {Consumer, Provider} = ThemeContext;
const ThemeProvider = ({currentTeamId, children, themes}: Props) => {
const getTheme = (): Theme => {
if (currentTeamId.length) {
const teamId = currentTeamId[0]?.value;
const teamTheme = themes.find((t) => t.name === teamId) || themes[0];
if (teamTheme?.value) {
try {
const theme = JSON.parse(teamTheme.value) as Theme;
EphemeralStore.theme = theme;
requestAnimationFrame(() => {
setNavigationStackStyles(theme);
});
return theme;
} catch {
// no theme change
}
}
}
return getDefaultThemeByAppearance();
};
useEffect(() => {
// @ts-expect-error ts module not yet updated
const listener = Appearance.addChangeListener(getTheme) as EventSubscription;
return () => listener.remove();
}, []);
return (<Provider value={getTheme()}>{children}</Provider>);
};
export function withTheme<T extends WithThemeProps>(Component: ComponentType<T>): ComponentType<T> {
return function ThemeComponent(props) {
return (
<Consumer>
{(theme: Theme) => (
<Component
{...props}
theme={theme}
/>
)}
</Consumer>
);
};
}
export function useTheme(): Theme {
return React.useContext(ThemeContext);
}
const enhancedThemeProvider = withObservables([], ({database}: {database: Database}) => ({
currentTeamId: database.get(SYSTEM).query(Q.where('id', SYSTEM_IDENTIFIERS.CURRENT_TEAM_ID)).observe(),
themes: database.get(PREFERENCE).query(Q.where('category', Preferences.CATEGORY_THEME)).observeWithColumns(['value']),
}));
export default enhancedThemeProvider(ThemeProvider);